Scarlett Johansson Isn't Pregnant With Sean Penn's Baby

Scarlett Johansson was spotted jogging this past weekend with new beau Sean Penn and buddy Owen Wilson. And after a photo of her surfaced from the friendly run showing an ever-so-slight belly, rumors have been running rampant that the 'Iron Man 2' star is pregnant.

Not the case, her reps said. "Scarlett is not pregnant," Johansson's publicist, Marcel Pariseau, told PEOPLE. "She's been training for 'The Avengers' for over four months and is in the best shape of her life."

In fact, Pariseau blames her outfit: "She's outside running and it's simply the placement of her shirt that is misleading. She was followed and photographed for over 20 minutes and I'm sure there are other photos in the series that show and prove that she is not pregnant." See the incriminating photo at PEOPLE.

Johansson and Penn have been dating for a couple months. The 26-year-old actress and the 'Milk' actor were first spotted together at a party celebrating the film 'Black Swan.' Since then, the couple has been spotted in Mexico and even attended Reese Witherspoon's star-studded wedding together.

Johansson separated from husband Ryan Reynolds in December. Penn, 50, and actress Robin Wright divorced in 2009 after 13 years of marriage.

S.J. is stolen biological material, taken against will and formed to clones line 200 pieces total. Sign of dangerous criminal activity. Original Scarlett Galabekian future pediatrician doctor, pediatrician nurse license she obtained in 2008

I CAN'T UNDERSTAND HOW SHE CAN EVEN BE SEEN WITH HIM GOING OUT TO DINNER LET ALONE SLEEP WITH HIM....OBVIOUSLY SHE HAS SOME KIND OF BRAIN DAMAGE....ITS NO WONDER RYAN REYNOLDS WAS HARDLY EVER SEEN OUT WITH HER DURING THEIR 2 YEAR MARRIAGE....HE MUST HAVE KNOW FROM EARLY ON THAT SHE WAS MENTAL...AND APPARENTLY ALSO NOW DESPERATE TO DATE THIS OVER RATED OVER THE HILL CREEP

I KNOW, I KNOW SHE IS ONLY DATING HIM BECAUSE SHE WANTS TO RUB HIS OSCAR.....WHAT ELSE COULD IT BE...HE IS OLD ENOUGH TO BE HER FATHER...JUST LOOKING AT HIM MAKES MY SKIN CRAWL...NEVER LIKED HIM AS A MAN AN ACTOR A HUSBAND OR A FATHER...HE IS DOWNRIGHT REPUSLIVE...